Device for preventing the creeping of railroad-rails.



G. H. LUNERGAN. DEVICE FOR PREVENTING THE UREEPING OP RAILROAD RAILS. APPLICATION FILED MAR. 23, 1911.

1,009,674. Patented N0v.21,1911

Inve him T. @orye fiiam erg'an.

UNITED STATES P TENT OFFICE.

. GEORGE H. LONERGAN, OF LONGBE ACH, CALIFORNIL DEVICE FOR PREVENTIHG THE CREEPING 0F RAILROAD-RAILS.

Specification 0! Letters Patent. Application filed March 23, 1911. Serial No. 616,880.

Patented Nov. 21, 1911.

To all whom it may concern:

Be it known that I, GEORGE H. LONERGAN, a citizen of the United States, residing at JLongbeach, in the county of Los Angeles and State of California, have invented new and useful Improvements in Devices for Preventing the Creeping of Railroad-Rails, of which the following is a specification.

'This invention relates to improvements in railroad chair plates and it is the object of the invention to provide a chair plate with securing means adapted to be fastened to the ties of a road bed, the said plate being also provided with rail grip ing means for preventing the creeping-o the rails of a railroad. I

It is also the object of the invention to .provide a chair plate which'is adapted for useatthe joint between the ends of meeting rails, the said plate having lateral projecting tie engaging portions and also having adjustable means for engaging and grip-,

ping the edges of rails superposed upon said late. I

In the drawing forming a part of this specification, Figure 1 is a perspective view of a portion of arailroad rail showing the improved chair plate and anti-creeping devices applied thereto. Fig. 2 is a top plan view of the chair plate. .Fig. 3 is a transverse sectional view-taken through the base The apertures 4 are arran and through said of a rail and through the'said plate taken upon the line of one of the gripping devices for preventing the creeping of the rails;

The details of the invention-will now be more particularly described reference being.

had to the drawing in which 1 indicates a body portion of the chair plate forming the subject matter-0f the present invention. n

order to adapt the plate 1 to its application to the ties ofa road bed the said plate is provided at suitable intervals with laterally projecting portions 2 and 3 usually arranged opposite each other and provided with spike receiving apertures as .4. The plate 1 is preferably made for-the greater portion of its length about the same wldth as thebase or flange of therailroad rail that is to rest'upon the semen.

d to come just outside the edge of the rai flanges so that the spikes 5 which are driveninto the ties apertures 4 will be in' position to engagithe rail flanges in the usual way as will apparent by reference -,to

Fig. 1. There may be one or more sets of projections 2 and 3 around the length of the chair plate 1 but'twoof'suoh sets ofprojections are usually simple for the purposes required and are arran ed to rest upon adjacent ties of the road The ends of the chair plate 1 project beyond the securing projections 2,-'3 and are provided with upturned rail engagin flanges 6 formed integrally with thesai plate 1. Opposite to the flanges 6 the plate 1 is preferably reduced in width as at 7 and is provided with a lateral extending screw as 8. The said screws 8 are adapted to receive removable clamp plates 9 havin rail engaging flanges 10 adapted to extend inwardly over the edge of the plate 1.

In applying the chair plate in use it is usually slipped beneath the rails of a road bed and secured to the ties as above indicatecl. The chair plate is located so that the securing flanges 6 overhang the rail flanges after which the removable clamp plates 9 are slipped upon thescrews 8 and one or more nuts 11 are employed upon saidscrews for drawing the clamp plates tightly against the flanges of the rail or rails. The reduced portion at 7 insures a tight gripping of the rail flanges since the material of the chair plate 1 will not interfere with the inward adjustment of said clamp plates. One or more nuts upon each screw 8 may be-used as desired and the outer lock nut is generally employed in connection with the inner securing'nut.

.The chair plate is usually employed be-jneath the meeting ends of adjacent rails so as to thoroughly support the rail joints.

so grip the rails. as to prevent are so held as toprevent the space being closed up by the endwise movement of the rails. i 1

The adjustable ping means em loyed permits of the rad: Being closed up y the endwise movement of the rails. The ad ust able gripping means. employed permits of the rails being loosened at any time for ordinary repairs or renewals. The connecting of the meeting ends of the rails as above described is found to prevent the creeping of the rails under the rolling action of trains passingover. said rails.

What I claim is 1. A railroad chair plate, comprising an elongated rail receiving portion, means near the ends thereof for gripping the ends of adjacent rails, comprising fixed flanges carried by the said elongated plate and movable flanges opposite thereto, bolt mechanisms projecting from said plates for adjusting the movable flanges, the structure being such that the flanges at one end of the plate may be released whentamping' or truing the rails and to allow for expansion and contraction thereof after which the rails may be clamped again to hold the parts in adjusted positions.

2. A- railroad chair plate having means for securing the plate toa plurality of ties Copiesof this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

of a road bed and provided with rigidflanges for receiving the flanges of a rail and oppositely projecting bolts and adjustable clamp plates engaging said bolts and adapt ed to force the rails against said rigid flanges. v

3. A railroad chair plate comprising a body portion capable of reaching past a railjoint having railroad rail engaging flanges, thesaid plate being reduced in width opposite said flanges and having threaded bolts projecting therefrom, an adjustable clamping jaw adapted to engage each threaded bolt, and nuts for forcing said jaws against the flanges of the rails to prevent the same from creeping.

In witness that have hereunto subscribed my name this 11th day of March, 1911.

Washington, D. C.

I claim the foregoing I 

